Minecraft 1.3 [ PreRelease 11 ] 12w27a - JKoop

Snapshot 12w27a

Bug fixes!
Optimizations!
Please check your piston contraptions. Most we've tested still work fine, but some require changes to repeater delays and similar. Overall, pistons should have fewer bugs, but will appear to update slightly slower.
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INSTALL INTRUCTIONS 


Windows- 

1. Type %appdata% in the search bar 

2. .minecraft/bin

3. Drag/Copy the new minecraft.jar file into /bin folder and replace it.

4. Make a new folder named "server" .minecraft/server in that folder drag/copy the minecraft_server.jar file 

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MAC - 

1. goto Finder/User/Library/Application Support/minecraft 

2. FOLLOW STEPS 2-4 above.